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Finding the Fourth Proportional to 141,866.64, 212,172.53 and 126,181.71

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Solution

The fourth proportional to 141,866.64, 212,172.53 and 126,181.71 is: 188,714.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,866.64 : 212,172.53 = 126,181.71 : x
  2. Step 2: Convert to fraction form
    141,866.64/212,172.53 = 126,181.71/x
  3. Step 3: Cross multiply
    141,866.64x = 212,172.53 × 126,181.71
  4. Step 4: Simplify right side
    141,866.64x = 26,772,292,019.52
  5. Step 5: Solve for x
    x = 26,772,292,019.52/141,866.64
  6. Step 6: Final answer
    x = 188,714.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.